no highway to carry it around the north side of lake superior . motor ##ists had to ship their cars by boat between saul ##t ste . marie , ontario , and thunder bay or enter the united states to continue along the auto trail . the routing ##s varied on the maps of the time , but its basic route used us 2 through the up from iron ##wood to saul ##t ste . marie until a highway north of lake superior was opened in 1960 ; by that time , the auto trail had taken on the trans @ - @ canada highway name . = = = state trunk ##line = = = the first state trunk ##line highway designated along the path of the
no highway to carry it around the north side of lake superior. motorists had to ship their cars by boat between sault ste. marie, ontario, and thunder bay or enter the united states to continue along the auto trail. the routings varied on the maps of the time, but its basic route used us 2 through the up from ironwood to sault ste. marie until a highway north of lake superior was opened in 1960 ; by that time, the auto trail had taken on the trans @ - @ canada highway name. = = = state trunkline = = = the first state trunkline highway designated along the path of the